mtip32xx: Remove dfs_parent after pci unregister

commit af5ded8ccf21627f9614afc03b356712666ed225 upstream.

In module exit, dfs_parent and it's subtree were removed before
unregistering with pci. When debugfs entry for each device is attempted
to remove in pci_remove() context, they don't exist, as dfs_parent and
its children were already ripped apart.

Modified to first unregister with pci and then remove dfs_parent.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 78344ae539994e948e2242f74bd6252c102ee595..0d94e09221d98a98cbf51559730c1531ab6347d8 100644 (file)
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -4784,13 +4784,13 @@ static int __init mtip_init(void)
  */
 static void __exit mtip_exit(void)
 {
-       debugfs_remove_recursive(dfs_parent);
-
        /* Release the allocated major block device number. */
        unregister_blkdev(mtip_major, MTIP_DRV_NAME);
 
        /* Unregister the PCI driver. */
        pci_unregister_driver(&mtip_pci_driver);
+
+       debugfs_remove_recursive(dfs_parent);
 }
 
 MODULE_AUTHOR("Micron Technology, Inc");